Costco has updated its free sample rules to prevent children from receiving food without adult supervision, citing safety concerns and allergy risks.

One of the best parts about shopping at Costco is the free samples, but there are certain rules that shoppers have to follow to get those tasty morsels ...

Costco members are thrilled to discover the secret rule governing free samples.

For many Costco loyalists, free samples are more of a ritual than just a perk of each visit. A warm pretzel bite here, a surprise smoothie sip there. Some folks even time their shopping around ...

Costco has quietly implemented a stricter policy when it comes to who gets to enjoy the goods, and the new rule is especially aimed at solo snackers under 18: No adult, no sample.